CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 410	$ 488
Restricted cash	3	4
Accounts receivable, less allowance of $139 and $142	2,446	2,398
Assets held for sale	8	12
Other	1,011	918
Total current assets	3,878	3,820
Property, plant and equipment, net of accumulated depreciation of $28,097 and $26,859	25,860	26,408
GOODWILL AND OTHER ASSETS
Goodwill	21,527	28,031
Operating lease assets	1,844
Restricted cash	27	26
Customer relationships, net	8,245	8,911
Other intangibles, net	1,962	1,868
Other, net	1,165	1,192
Total goodwill and other assets	34,770	40,028
TOTAL ASSETS	64,508	70,256
CURRENT LIABILITIES
Current maturities of long-term debt	1,595	652
Accounts payable	1,634	1,933
Accrued expenses and other liabilities
Salaries and benefits	921	1,104
Income and other taxes	374	337
Current operating lease liabilities	488
Interest	294	316
Other	337	357
Current portion of deferred revenue	852	832
Total current liabilities	6,495	5,531
LONG-TERM DEBT	33,193	35,409
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred income taxes, net	2,826	2,527
Benefit plan obligations, net	4,213	4,319
Noncurrent operating lease liabilities	1,467
Other	2,622	2,642
Total deferred credits and other liabilities	11,128	9,488
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Preferred stock—non-redeemable, $25.00 par value, authorized 2,000 and 2,000 shares, issued and outstanding 7 and 7 shares	0	0
Common stock, $1.00 par value, authorized 2,200,000 and 1,600,000 shares, issued and outstanding 1,090,137 and 1,080,167 shares	1,090	1,080
Additional paid-in capital	22,342	22,852
Accumulated other comprehensive loss	(2,419)	(2,461)
Accumulated deficit	(7,321)	(1,643)
Total stockholders' equity	13,692	19,828
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 64,508	$ 70,256